
import { API_KEY180 as API_KEY, API_SECRET180 as API_SECRET, APPID180 as APPID } from '@/utils/APIKEY.js'

import { onMounted, ref, computed,defineEmits } from 'vue'

import './js/crypto-js.js'
import './js/index.umd.js'

const emit = defineEmits(['reset']);

const  isStop = ref(false) 
// 当前录音的结果
let voiceRuselt = ref('')
// 记录当前录音的的状态  
let statusText = ref('')

let btnStatus = "UNDEFINED"; // "UNDEFINED" "CONNECTING" "OPEN" "CLOSING" "CLOSED"

onMounted(() => {
  const btnControl = document.getElementById("btn_control");
})

const recorder = new RecorderManager("../../dist");

// console.log(`output->recorder`,recorder)
recorder.onStart = () => {
  changeBtnStatus("OPEN");
}
let iatWS;
let resultText = "";
let resultTextTemp = "";
let countdownInterval;

/**
 * 获取websocket url
 * 该接口需要后端提供，这里为了方便前端处理
 */
function getWebSocketUrl() {
  // 请求地址根据语种不同变化
  var url = "wss://iat-api.xfyun.cn/v2/iat";
  var host = "iat-api.xfyun.cn";
  var apiKey = API_KEY;
  var apiSecret = API_SECRET;
  var date = new Date().toGMTString();
  var algorithm = "hmac-sha256";
  var headers = "host date request-line";
  var signatureOrigin = `host: ${host}\ndate: ${date}\nGET /v2/iat HTTP/1.1`;
  var signatureSha = CryptoJS.HmacSHA256(signatureOrigin, apiSecret);
  var signature = CryptoJS.enc.Base64.stringify(signatureSha);
  var authorizationOrigin = `api_key="${apiKey}", algorithm="${algorithm}", headers="${headers}", signature="${signature}"`;
  var authorization = btoa(authorizationOrigin);
  url = `${url}?authorization=${authorization}&date=${date}&host=${host}`;
  return url;
}

function toBase64(buffer) {
  var binary = "";
  var bytes = new Uint8Array(buffer);
  var len = bytes.byteLength;
  for (var i = 0; i < len; i++) {
    binary += String.fromCharCode(bytes[i]);
  }
  return window.btoa(binary);
}

function countdown() {
  let seconds = 50;
  // btnControl.innerText = `录音中（${seconds}s）`;
  statusText.value = `录音中（${seconds}s）`;
  console.log(`output->statusText.value`, statusText.value)
  countdownInterval = setInterval(() => {
    seconds = seconds - 1;
    if (seconds <= 0) {
      clearInterval(countdownInterval);
      recorder.stop();
    } else {
      // btnControl.innerText = `录音中（${seconds}s）`;
      statusText.value = `录音中（${seconds}s）`;
      console.log(`output->statusText.value`, statusText.value)
    }
  }, 1000);
}

function changeBtnStatus(status) {
  btnStatus = status;
  if (status === "CONNECTING") {
    // btnControl.innerText = "建立连接中";
    statusText.value = "建立连接中";
    isStop.value = false  
    console.log(`output->statusText.value`, statusText.value)

    // document.getElementById("result").innerText = "";
    resultText = "";
    resultTextTemp = "";
  } else if (status === "OPEN") {
    countdown();
  } else if (status === "CLOSING") {
    // btnControl.innerText = "关闭连接中";
    statusText.value = "关闭连接中";
    isStop.value = true  

  } else if (status === "CLOSED") {
    // btnControl.innerText = "开始录音";
    statusText.value = "开始录音";
  }
}

function renderResult(resultData) {
  // 识别结束
  let jsonData = JSON.parse(resultData);
  if (jsonData.data && jsonData.data.result) {
    let data = jsonData.data.result;
    let str = "";
    let ws = data.ws;
    for (let i = 0; i < ws.length; i++) {
      str = str + ws[i].cw[0].w;
    }
    // 开启wpgs会有此字段(前提：在控制台开通动态修正功能)
    // 取值为 "apd"时表示该片结果是追加到前面的最终结果；取值为"rpl" 时表示替换前面的部分结果，替换范围为rg字段
    if (data.pgs) {
      if (data.pgs === "apd") {
        // 将resultTextTemp同步给resultText
        resultText = resultTextTemp;
      }
      // 将结果存储在resultTextTemp中
      resultTextTemp = resultText + str;
    } else {
      resultText = resultText + str;
    }

    voiceRuselt.value = resultTextTemp || resultText || "";
    // document.getElementById("result").innerText = voiceRuselt.value
    console.log(`output-> voiceRuselt.value`, voiceRuselt.value)

  }
  if (jsonData.code === 0 && jsonData.data.status === 2) {
    iatWS.close();
  }
  if (jsonData.code !== 0) {
    iatWS.close();
    console.error(jsonData);
  }
}

function connectWebSocket() {
  const websocketUrl = getWebSocketUrl();
  if ("WebSocket" in window) {
    iatWS = new WebSocket(websocketUrl);
  } else if ("MozWebSocket" in window) {
    iatWS = new MozWebSocket(websocketUrl);
  } else {
    alert("浏览器不支持WebSocket");
    return;
  }
  changeBtnStatus("CONNECTING");
  iatWS.onopen = (e) => {
    // 开始录音
    recorder.start({
      sampleRate: 16000,
      frameSize: 1280,
    });
    var params = {
      common: {
        app_id: APPID,
      },
      business: {
        language: "zh_cn",
        domain: "iat",
        accent: "mandarin",
        vad_eos: 5000,
        dwa: "wpgs",
      },
      data: {
        status: 0,
        format: "audio/L16;rate=16000",
        encoding: "raw",
      },
    };
    iatWS.send(JSON.stringify(params));
  };
  iatWS.onmessage = (e) => {
    renderResult(e.data);
  };
  iatWS.onerror = (e) => {
    console.error(e);
    recorder.stop();
    changeBtnStatus("CLOSED");
  };
  iatWS.onclose = (e) => {
    // console.log(`output->onStatus`,onStatus)
    recorder.stop();
    changeBtnStatus("CLOSED");

    isStop.value = true
  };
}

recorder.onFrameRecorded = ({ isLastFrame, frameBuffer }) => {
  if (iatWS.readyState === iatWS.OPEN) {
    iatWS.send(
      JSON.stringify({
        data: {
          status: isLastFrame ? 2 : 1,
          format: "audio/L16;rate=16000",
          encoding: "raw",
          audio: toBase64(frameBuffer),
        },
      })
    );
    if (isLastFrame) {
      changeBtnStatus("CLOSING");
    }
  }
};
recorder.onStop = () => {
  console.log(`时间到了`)
  clearInterval(countdownInterval);
  statusText.value = '开始录音'
  isStop.value = true
};

const btnControlclick = () => {
  console.log(btnStatus,'btnStatus')
  if (btnStatus === "UNDEFINED" || btnStatus === "CLOSED") {
    connectWebSocket();
  } else if (btnStatus === "CONNECTING" || btnStatus === "OPEN") {
    // 结束录音
    recorder.stop();
  }
};

// 语音说话内容
let resultComputed = computed(() => voiceRuselt.value)
// 当前状态的内容
let statusTextComputed = computed(() => statusText.value)
// 当前是否是关闭状态
let isStopComputed = computed(() => isStop.value)



export const serviceHooks = () => {


  return {
    btnControlclick,
    statusTextComputed,
    resultComputed,
    isStopComputed
  }
}